Dramatized
Legend
I you just want to add new WoW game account, it's easier just to have someone send you're login email a RAF request. For existing f2p battle.net accounts, like you are talking about, you have to call Billing support:
Phone Support
1-800-59-BLIZZARD (1-800-592-5499)
Users located in Australia should use 1-800-041-378 if they cannot get through with the number above.
Users located in Singapore should use 800-2549927 if they cannot get through with the number above.
International: (949) 955-0283
Be sure to be super nice
Thx